python练习题答:!/usr/bin/env/python# coding: utf-8#def fibonacci(n): """ This question is about Fibonacci number. For your information, the Fibonacci sequence is as follows: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, ... That is, the first two Fibonac...